9 10 I I 12 b. 817 t c 16/15t d. t li>e perce11tage elongation ol' obtai oed tfom statlc tensioij test depends upon the a, of the test spooimen b. gau

Transcription

1 @ セ I (.t..t:-1'1'\' 199R I I ot ll I MECHANICAL enginerin g セ in@ In a se1ru inlin1le nar pla1e sbow '" the!igwe. the dlcoieticul sl!css t:oncentru!joii tilc1or K. for an ャャゥーエゥセ hole of major U.\iS 2n and minor axis 2b is given I ) t f I CI". > セ Mc@ o.o a. ""=alb b. K, & I +-u/11 c. K.= '1/o <.1 K, = I +2t\lb 1 The compjementary shear StrC'iSes of lll!ciisii)' are induced a1 a poi111 "' 1hu murenal, as shown IIi tht' figure Which one of following 1s th<- corr<-cl se1 of orienlol!<>ns pnncipal planes Wllh rcspeciio AB? D c,._.a a. 30" ond 11()" b. 45"und 135" c. 60"and 150" d. 75 and 1650 A materont element subjected 10 n plnne 5tmu of Stress such thllt the mu\lmum '>he.ar セ イ Z[ is e(tual f() U1e maximum tensile slr<ss. \vould eorrusl)l!lld 111 (.")... --Q-. " i セI@? 1<1 M h ッォセ M セMョ ウ@ ' In a s1mple trns1nn tesl law vnhd up to the a, elastic I omit b limi1 ofpropornonality c. ult1mote 5 (> <.1 po1m The stres.-rstrnin curw of un ideal <'la.<>l ic. stra1n tl hnrdenmg 1nuterial will be as 111 a. ;E_.;e c. ;L '111r rouo of the area under the bcndm& d. moment Jiagrom to the Jlcl(urol ri!lidily between nn) r.m po1ms nlong n heam gm's the change m a. de0cciioi1 b. slope c. shear fon:c d. llcndmg moment Which one of the ヲッャャッ fig trcs rcproscnis the correct. shear lixcc d1agram for the loaded beam -shown in tbu givcu figure 11 a. IJ( \\' 1 /lsi J. c--.; 0 セ M0 0 t! I "- Two sled shahs. one solid of d1wneter D and the. other hollow of outside dl!lme1er D and 11151de d1tm1cter D/2. nrc twisted to the セュ ウ@ ungle of twtsl P<'' unjl length_ l11c rut io of maximum shcur stress on solid shall 10 i.llut in the hollow 1\uR IS a. 4/9 t

2 9 10 I I 12 b. 817 t c 16/15t d. t li>e perce11tage elongation ol' obtai oed tfom statlc tensioij test depends upon the a, of the test spooimen b. gauge of the specimen c. nature of end-grips or the tes1i ng machine d of tbe test spec men Match List T (Tenns used in thin c;ylinder stress analysis) with List II (Mathematical and the correct answer; t..ist I A, Hoop SlfCSS B Maximum shear stress C. Longiwdinal 0 Cy linder ListU I pd/4t 2. pdl2t 3 pd/2c; -l. pdl8t CQdl!ll, A B C D a. 2 3 L 4 b I c I d 2 4 I J A thin cylinder uf ' d' artd lhick, ess 't' is subjected 10 an intemal pressure p 'rhe change in diameter is (Whete ll is tho modultis of elasticity nnd is the Poisson's mtio) a ptl= 41 F(2-ft) b -- '"' (1 +ll ) 2/lr. c, p[ {2.t-p) 1E d pd (l - ) 41 R!1 l'wo ideuticaj sprirrgs, each al stiffness K are assembled os shown in the given tigure. The combined stiffness of the assembly is lui IJ セオ ェ イ セャ@ s ーウャョ a. K 2 b. 2K c. K d. 1/2 K 13 Two close-coiled springs 81'1! to Um same axial f<,lrte U' tbe secuttd spri og has f(lur lintes lhe coil diameter. double the wire diameter <Uld double the number or coil$ of rhe llrst spring. then the of deflection of the second spring to that of the lirs1 1vill be a g b. 2 c. 1/2 d. 1/ 16 Mru.ch List l (Cutriog tool material) with List II (l'ypical Value of tool 11 fe exponent 'n' m the Tavlor's equation V, r = C) and select Ute correct auswer: List l A. HSS a Castalloy C Ceramic D CArbide LislTf I J ,5 Codes, A B C r> a b 2 I 3 4 c d. ] 4 J 15. The cuttlnr velocity in mlsec.. for turning a work plece of diameter LOO mm nl the speed of 480 ltjim is lo b. 251 c. 4S d 151 Wblcb of the rollowing tool materials have cohah as a constiiuent clemcm'l 1. Tungsten carbide. 2 CBN'

3 3. Stellite -1. l r<'on I ond 2 b. I ond c. I nnd4 d. 2 ond Which or the following slotomculs ll'uc of f.occ milling? I. Face milling cuttw if held on nn nrbor. 2- It has two rake angl.:s - N セゥ rake and イッ r.j,.-., 3. The mnximum cb1p thickness "'luul$ the feed per tooth. セ M 'lne chip tl1k-kn""s ''aries from a mfruntunl at start of cu1 to mo!<.imum o! the omd uf cut. Select tltc J<)rTOOI an<wer ll.\ling lhe code. given below.<. l nncl 2 b. 2 nnd J 1!. 2 and -1- <L 3 ond IS. セ エ list I Hp イッ オセエ N[I@ wjlh Lll!L ll (Processes) and seleet the com.'ci on wer l..ii>t I A. I.I.S.11nglC!i and セャエ r ョ J:l. Ca hurcrtors C. Roof trus<os D. Genr 1<hc..-ls J.JstU I, Welding 1. Forging J. Casting セ M RfJUing c.' odes. A D C D 2 J 4 b l e. I 2 3 tl. 3 2 I J9. 2UOI)cc: of oir ャョォ 1_1_ miuul"" lo pas> l lhrougl1.'1 Rlandurd opccimen!>f Jnnd (S 08cm lugh nml 5.0l!cm in din.), n,. rnnnometcr inclico\t>; rress\lrt n$ 5 glcm 1 ID tins cak" tho permeability numl><:r l'l " 311 b. 42 c. 51 d, 67 ァ ョセイ エッイL@ ァョゥャセセ P@ セP@ ャ^ セ@ Jut i\sguming <ttruj!ht Jinc V - 1 chornclc:nslic!o fot a de elding SloOJL-eir"u't ctorrent as 400 A -and Ot)en "irc.uil Vltllage 100 V. wbitih une of U\e f<l llbwing the L'<lrrocl v ()hnge ncl t lllm(imum (In:. power? a. A and LOU V b. 200 A and 100 V c. t\ and 30 \' d. 200 A nnd 50 \ 11. The forging defccl due to hindrance lo 11()1' <)f metool in c:om(lllnenl eo lied Lap thtt cmn"' rodilll! JlfOvidocl is ltlu lnrge b. the comer rodfu!l provided is too small c. dratli& not provided d. the hrinkage allowonce model<ju le 22. Mn8JI<l.<ium is e,xtruded nnd nol -mlled because a. it a hl\1 melting point b. it Joos 101' dcmsity c. its rcocti, ity witb rou DlJIIorlal is!ugh d. it has clo c rnck<id hexognnnl SINOIUTC 23. Consider the fqllowiug ウャ N ョャ ュ ッウ NLMNッイゥセZ@ セャッ セッイッ セ id witlollto latloc 1. St.,dy n:<l is u.sed for Upport:ing long.rob in between head t.nil slod;:. 2. lvlandml is used l'c1r turning \lfi1aii c) liudrical job. 3. CoUct:s- arc tucd.lor- turning discshnpell.job. Of 1hese statements I :md 2 are etmcct b. 2 and 3 Ol'eCUil.:d c. 3 alone r d. I A]QD" C<'r:tCI!I 24. Which of the following meo!ods ar\l ui.tnble ror Lha production of <uper illlnyol'l 1. AJrJmiZ\Ition frr1m molten ll!!ing inert. g l!. 2. Alo01izu1inn using plasttta on: tmd mlllting c:lectr(ldc. 3. Reduction and cmshlng. a. I and 2 b. 2 and 3 c. I and 3 d. l, 2 aud Matob List I (Nnmc of Jnolding 10 prep re pimiics) wilh LI L

4 @ セ ッj 26. ' uioゥ セ M イエオウQゥ セ エセs L@ エャエセZ@ cnz ャオャッウ セョカャエャャカ D@ セケイセ [ウ ョ セッョヲゥ II ( Pl'lll"'rty of COniJ'IlSih OII) find select tbe correct nns<vell.j_q l 1\ Binde Ptller C D Lubricmll List II 1 Rtdul'e.hrinkngt 2 Make mouldmg of plast1c cas1er ) condensation and Jllll) m<:rizntiou 5 Toughue:ss nnd to tempemrure Codes. A B c D IL J l s b l s 2 c. j ) I,, 3 s 1 1, o, 9. 8 and 0 are the times rl'cortjed (or 000 element of Operation. How many cycllls 1!11"' srudy if!he error JS not to excetd.5 percent nt level of9'1. 7? b 71 " \)(> d Smndantiznuon of pmduc1s is dane to a l.'liminn1e オョョ セᄏN[srヲGャ@ varfe1f.:s in design b shnplity mwmfnc.111nng pro<.:ss " make inlerchangeable mauufauture IXlSSobled reduce ooterful ッセQ@ Matcb LtSI I (Ma!erial hnudling equir>mentsl wifll r 1$1 n!ar Jll cnllon in a foundry) and select llte co m-el answer: Ltsl I A Belt wnvcyor B. Monorrul conveyor C Aprqn C\lii\CyOI' D r Aセャ conveyor Li>I JI I Tt mvve the compacted mould ャッセ 2. To mo\e the prepmed mouldmj; sand. 3 'r'u muj;th l'll.'>lmg tu the fettling station 4 I to trnnsfcl' tile ltl(lllcn mclnlladlc Jl セエッカャエャ ュセュ イUL@ ーイッ igcjャセitエ j@ I ol IJ Clldes A B C D n, 3 I 5 b 3 I 5 2 e d. 3 5 I I A graphical rerrcsentminn of the coordinated ( t.e fllnrlnmrmull lllotillll$) tjf All l)perstols i)ody on a common nme sc.al<' 1s lruown ns n, Sl MO b. MaJ>-Machmc chan c., rwo-tmndn proc= chan d Gnnnchan Mau-Mochine chlll1 fo u nollvlt) i; 111 I he figw e J:IIVCII bdow 111e percemage Ulility <)f man and nmch ine in the prutlocllllll ti<iivhy arc respectively n. 5H'I o.nd 71)% b. 1!11d 77 7% c, so.and60 ;. d SO 4 and 90" Wlncl1 one of the fo llowu og IS required lbr Ute prepamtion of the load churl maclune? II. l'l'oces!l Chllrt b. Sequencing of jobs on the mndline c. Roulr セ ッ of d Sc)ledule or jobs lor the Q セ l'hrowawa)' イオN ョセエ carbodc top ruols are IIIUillli'uCIIIfCd l>y a. forging b. bmzing c. powder ntcmllurgy d. c.xtrus on Consodtr tucnnon ot' a w:trellouse 10 distrib\fle books fot the cines of Bombay Oangal ore 3Dll CaicuttJL The estlnmted vohnnes nf distribnti<m 111 Bombay Bangalurennd Calculi-a nre 5SJ)()()_ 2QOOO 11nd セU N P@ セxAc カ UsingS()onc appropriate origm the lx, < ) cch1rdinatesnfbomll.1y, Bilugnlure and Ctllc.uun approximated as- II 0, :!0), (20, I 0) and (30,...

5 @ セ セ セャ@ o.n 30) respecnoely. The (X'. II} セエhャイ ュョエ of the opumai IocnUon lllt>uld ll<' a, (10, 20l b. ( ) a. (30, 20) d (20, 30) T\\o jigs are under cansidernllon lor a drilling, operruino to mak a pruticulnr part. Jig A ッセlB@ 800 ami ha., ape1111 ゥョセZ@ W31 11fRs 0.10 per pan Jig 13 costs rセn@ 1200 and has 11pera1 ing C0$1 of 0.08 pet pall rhe IJIUI/ll ity Vf pa 1> 1!) he lllhntlfnr;llll'l:d Ill which ert1ter jig prove eqtmlly co511y is a 81)00 b c. :wooo d The J'liW malennl CWl he IVUied u J itrcrem nmchmes for mmufllc!iirinl! 11 sped'lk product Figure shown belo11 lndlcillc$ the lime taken m haiti> for euch mnchlne I' IT A, B, C D, E, H Md J Wnich one of the shown roures ts 10 be tbllowed Jor 111M11nutn J)roducttvtty? -- セ N@ RM A-R-C-EP b. RM-D-B - J - FP c. RM D- l3-c-fp d RM- E H J fp Tl1e barometric pressme -at tbe base of a ッュキオ オエlセ@ 750 nun Jig nnd 111 U1e top 600 mm Jig. If nwmge roir ャ ョNセエケ@ I kgfnl the height of the ll'lllllolain is npproxtmatdy II, 1W()tl1 b. JQOOm c. 4000m ct sooom II system オョ セイァッ N\^@ 11 chnnge of state during which 80 kj ofbeat ili 11'BJ1Sferred 10 It and it 60 lj of oイセ N@ system is i)mught hncl In ots orisinal state n j)i'occss dunog whoch 10() 1J of 11tlll I$ lt'ut\si\:rrcd 1(1 II I he II'Ork. セャエゥc@ b) II!<: ャ 1:. a 40 1<.1 b. ou kj c 120 l) c ャ ヲゥ エセ iu Z L y@ Q [ ッュ Q ャイ イセs@ d. 180kJ JS. rhcnnodymmuc work IS 1 he pl'tl\htot ol' tl 1\\n imensive IJI'DpeT1 ies l>. two e -rensive properttes c.. '"' unc.tjsii'c pnpcny and clmoge to an C"Cil_'il\'0 pwpeny d. an extensive propeny 110d change in an iutensrve pro pmy JO A tcvcrsthle heat OJX:tntrng between hilt and Cllld reservoirs delivers D 1\'tlfk OLilpiJI or 54 kj II t'ejtc!> n heat \lf661j '11113 u(thjs a (1,45 b 066 e, 0 7S d tl 8.! -10. Which one- of rhe tbllowlng e\pl'e<>"slons for I d5 true lor a,imple substance'! (Norouons have the usual meruunjl) a dh- vdp b dh "' VdJl,. dh p;.lv d db + pdv -II. If a pure subsmnce conlnmcd tn a VC-'SCI pn. sell through the critocal staw on hc<tting io11ttal Slll!C should be a sub cooled water ll セョャオュエ ャセ ャ \ c. wet lcn111 d satumted steum -11. bo (Qilnwmg P - T d1agram ot wnter showing phase equilibrium lines, the subl1mntion l ine is Gセ A GB G GBG@ a p b q c r d i セ 43 Which of the f(ll!owinll we J)ure substances'' I Stc-J111 and wlltct uuxture 111 u conuum:r 2 Atmospheric air 3 i\tr Rnllii(JtilcJ Rtr II\ combust fun pmlltcb. a 1, 2 aud3 b 2.Jand 4

6 J5. 47, セ ッョウエゥャオエョl sioセu ャオ ョャウ@ ャ ューセt ッョャエセi j Gy@ ョエイッーセ@ NLNイセオセji@ ッオイッオョ V Q N <:. l. 3 ond.s d l 2-and-1 n.e enlropy of. of pore!jl1se5 is lb.: suno uf Lbe Clot.ropie.. of cv:.lumtd :tl " lenop<'taluro ;md pr<:l<oure of the mixture b. temperature ol' tha mo:<nora und tha partio fi>i'cssui\: of e. lcmpl!roluro ona wlumo of d. l)fci!&uj'ii: volume of the mixture l'be Gibbs :frce-euergy functions is proll"f!y eqmpnslng '" J)!"Clisure; volume IU)d temperature h. enllmlpy. ond entropy c. lcmpd'lllorc. pr.:5liui011rid.mlholpy d. l'( lume. and <\I ele<:tric motcw of 5 k\\' is <ubjec:lcd to o bm.king ld<t for I lu111r l'he gener:o l.ed h) Uot frietionnl fore<>; in lh..- pl'l."-'tss to tht: >I 200 C. rhe ""'ulting entropy chango will b" n 22.1 k.l1k b. 3tl.2 k.l K c. k.l/k J. 82. J k.l/k. Motdo List T \\lib Li t u ttd ウセャエ tl >:Ort..ct answer Ltstl ;\, Jrreversohilily B. JOUI<> lloomson experiment C. j ッオエ ᄋセ セ イゥュ \^ D. Rc:v=iblc ""WaCS Ust n I. Mech>nicol oquivnlcn! 2 1 1"hemlodynamic tempcrnture SCl3.1c 3 Throltling pr</c<ss セ N@ Loss of ovaihohiliry Gcッ [ セ Z@ セセャセュー 1\ B C D L d,.1 3 I 2 For air standml Brayton cycle. in<:rease in lit<= ma.,bnum of the cycle. wh.ilc keeping the pres!lure..ralio tlu..- :!iamo. wnuld reyult In.:L increose in arr slanclard effic:ien1.\y ho d"'-.'1'tas.e m :eit starul1rd efl.ic1encv c nl) chan11 In ilir セ Q ゥョ ョイ ヲゥセゥ 49. j(). 5l ヲゥ ォョセケ@ セ ャ ュオャエッセQ^ァ クー ョウゥャA 6 ul I] d. incrc4s in the but reduqtion in net \\Ork \Vbillh one of tbe foll11wlng cycles working 11'itb.in the 53/llu lomperalw u limits hns the highest work mtio? a, C.:amol cycle b. Joule: c 1l" "- Otto cyde d. Rnnkint cycle Mat<:h LiM (Th<..Tmodynomic. $)'lll<rinlprimc mover) with Llol IT ( l11ermod)'nllmic cycle).oml the corr<:ct 3nS\\<.-r: Listl t\. Air Uquefnctiun t'lanl B. Gas turbine witl1 mullist11ge ッューイ and <'. Free piston enginelcompres or with a gns lutbinc D. P uim:jot LisllJ 1. Alkin.son cydo 2. Braylon cycle 3. Ericsson cycle 4 Reversed StirUng cy<>le S. l,dmircyclc: c ッ N セ [@ B C D. J b "' 3 I S d. 4 3 I 'l'he olenrruoce volume of a reclpro<laling compr<:!!sor dlrcctly "lfccts piston peed h. ャ c. volnmctric <>i'ficicncy d. tempernlul'o> of air ;tfier compression 'T11e boiler w;ed m the Nuclear Pm..c:r Swlio.n nl Tar pon:. is of ャ a. pressurized wnh.. "'' typt! b. boiling woter typo c; Jlll.' ッャ d, liquid molal c:oolt:d \YP" セッョ Uゥ the following statenoenl.'i I. Breeder reactor prodnces more pju14mium th!jo..,_hal it. consumes. 2. Zirconiiun is uaed o.s 11 shield m.atcrial. ' Lead. is the tommqlll}' U>!td modertl!or Of lhc:j<e, lh< IIOC!i whith re n/)f com.>el, will Include

7 @ イセュ ィ ヲG\s ゥdi^kioc セ セ N@ 2\lnd J b. I and2 c. land3 J. I illld 3 Which one of lhe fo ll(minl! l!roups of dcvires is used lilr purt n:covcr ol heat from tbe llue l"t"'inj!. the tube b;tnkll in a セ v ッエ buolcr'! u. IJruon オ ュョャセ N@ "'l"'r healers und b. Fconomim. air prcheatcr end ゥエョャウュエ ャセ@ pm:ipiidior.: \\'ut.:r wnll drum lntcrnab mkl SttJl"r healer.. J. Super heaters. <'COnomiscr and air In lurgc power boilers, <nol.,lowers are U!k!d at regular lulcl'\ ols tbr clcaninl! tho tube>. What il Ute fluid U>Cd for lhe: same'! セ N@ Lo" rressurc セ b. Hot gas<:> e. J rotuir d. Uothnl! ""'er In high prcssun: "Uil.'r tub.: boiler<. lhc 1111>cs bundles nre u. hung li om lop sin:krs h. sullpoticd on wulls c. boill!d nn steel stntchon:s d. linnl)'lixcd on uuy セエョッ C01t>id.:r tbc lilllo\1 int; >tutcment: I. \aucl muss ll<l\\ note of trom \\ill less th:tn the thcn'dical >oluc in 1111 cases pf nm, through o nozzle 2. Mass u.. " nl >team C31100t be increased u.ocnuin value in the ense pf flow thrlluj!h u ョッイl i セ N@ 1. i\cmal vch)cil)' ッヲセエ ot the exit Qfil noujc "ill ulwny> he less than lhc d1e0reticul カオャオセ N@ 0 f these s エ ャ エョ a. L 1 and 3 W't' COm!<.1 b. I and 1 nrc C()fl'CCI c. 1 ttnd 3 8J'C c セ Gci@ tl t anti 3 on: \Go t'ollsider tbc オイ ^ セ A^@ in tbc sk<>lcll sbo-.n helo11 t -w. ln j ゥ Z オ nvnnnl セィッ L[@ セᄋ Q N@ 60. ( I. 1) IJ Ou1 of these cunes. 11h1ch are not cum:ctl} drawn 1\ illm(lude n. I anol2 b. j キ Q c. 2 and 3 d. 4 und If in an impulse lltrbinc tlcsig.ned lor lh.-..: vcnex flo\\. the 1ungcmlul 1 elocil) ol' ュ root ュ iifls() mm is -130 mls nnd U1e blade height b I OOmm. tben the tangcntinl 1 clncit) of "cam at tbe Lil' "ill "" n. 602!&'> b. 5().1 ml c. -1()9 mi. d. 307 mi. In uu axial llow gus turhiuc. d1e hol gases approach lloc rotor inlet 111lh uu ubsolute: 1 エセ c of 600 rn/s ito u di"'ctioo 30" drum the 1\bl'el t.angcnt.. The gases ャ the I'Oh>r セゥャ NI N@ If the blodc sflccd is 300 ml>. then the thoorctocnl rxmcr ou1pu1 JlCI' kgls of 1!35 llu\\ "ill be nppro.,imatel} n. 132 k\\ b. 156k\\- c. l 71kW d. 205k\lf If in a sl<"illil Hlrbinc <,HJ!lC. hl nl olrop In nooving blade rinjl i't -IU セ jo untl thnl in the list.'<! bltlde ring io, lio Ulkg. d1en the dcl111'e I'C8l1ion os u. RP セ b. セッᄋ N@ c. 60". tl Consider the folio\\ ing G ゥャョエセッョ I, Sufcty valle in h<1ilcr. will IIP.:rJic a. soon :IS lite ーイ 1'\!ndtcb IJ11: rnted オカャオセ N@ 2. l110 $11ll!t} Qオャ Q arc pn,lid<d for quick relea;c of pre>>urc, 3. Blo11 down \ ni\c Ot'CMIIcd regoolnrly 10 re:mo'e sedlmcnts if an\. 4. \\-utct lcwl is monitored セォ M エョ ャ I@ iii au laj!:e boilers. 0 f these stlj[cillcois a. I and 2 are.xorrecl b. 2 and J are correct c, 3 mod urc com:c1 d. I U!ld 4-are ッイセ Wh1.:h one of tbc follo11 Lilli i!< not 'Cilrrcct regarding both Kaplun lllld prop<!ll<'f ウ N a rhe runner is O\oal I

8 G6 67. G9. b Tite bipdes nrc wing type c. There are tour to ell!llt blade d. Tl1c blndt!l cun be otlj11sted セ F@ on the. direction of llow. Which <>ne of the fnlluwing is different trc>m the C)ther thr<:<:'l Pelton turbine h. Kuplun turbine セ N@ Ue l.a\'al turbine d. Parson>' エオイ 65. \\ ltioh One uf tl1c fullc11 iug e.'nmple ur pure I 1 OO"I>) rcodlun mnchine? セ N@ Peii <Jn wheel b. Froncis turbine c. Modem turbine d. l.1wn sprinkler When ius1oeclloo doors on tloe wn lis of boulders ore opened. t'l:uned dt><:'6 uot tc.p oul because o, Utese holes are small b. pressuo e ゥョウゥ is ncgotive c. llaml! lr.lvet. ィ vs ス G in tb;, diroclion of llow cl lhese holes an: loc31ed beyond lhe!uo noc" Au induced draft hn is noomally loe:rt.od at tho ll. outlet of tlte steam generator before the dust colll)!.lor b. outlet of the stenm gmcrntor nficr lho du t cnlleelor u. inlet C)r the stt:am gen.erntor heforc lhct セエ セエ セャエ ] ョエウ Z@ d. inm tltc genor.!ior nfler lltc olr hoaler C'tJn$l.ler the following I. A,.,,er-e jet protccl5 'Pelton lurhinc.frnm オカセ tm ウー t Ruqner セャッ \ ャ ZQ@ or P'r ncis エオイィゥ Q re セNオェ エAャ N@ 3. Dl'lft 1\lbe i;, オッ inv,.iably iu U reaction turbine ャョウエョャイッエゥセ N@ 4. Sur!!" <haj1 a Jll'illcctiw J.:vi"" on ーョセャ A ッ 5. Of these sllllcntcols u, I ""'' 2 are correc1 b 2 and 3 are coo-eel c. 3 anti -I "'"com:<: I d. I nnd -1 arc correct r\n on1oma1ic e:<pansion valve is requored to mainlmn constaul b. JS,...SUJ'C in the "vapol'mor b. iempa-olurc 01 lhe froc-l<:r , 73, 75. 8uf I ] c. pressure in I he ャ A line d. temperntllre in U!ecornlenROr ゥ Qセ pressure dnlp in liquid line in odiigol'oting セ NIG ^ エ I!IIUSCS " high C<llulem 1' h 011>hing nflhcliquld refoig<:rant 1!. hlg)l<:f Cl'fii'OI'JIOI' pr<!'!sui'c d. under..:ooling of the liquid セヲイゥァ セヲ H@ othennetii)oiiy セ compressor inn vapour eompre.<.sion refrigcrnlion ッ セ u in セ NL LNLNLN@ in energy B B h. int;ren$-e in energy -.:ansumption 1!. incrcasl' in CQP d. incr()a!l-4.1 in p1-.:ssut-c rnlio The popes md titling in ao nmmonu. refriseraliorr system should be mnda o f a. c3st steel nr " to ugh I iron b. nlumiuwm c. naval br.us 4. copper A or moist Jlf Is a lemperoture T and rubtivc humidity so< o. A pnrl of the. moisture is removed ndiabatically by n. ina absorbent. If' Ute he.1t or 3bSIII1'1ion is ut:gligiblc. the resultiu(l oir will hove tloc SllniC a. dry bu1b t.empcr.1hjrt1 hu1 -a lnn:er wet bulb temperature b. wet bulb tumpol'lilw'o but u high r dry bulb tcmporature " dry hu lh tempernrure bon A higher hull) toonpc;mture d. wc:t bulb lcmp01'"wtt hut lower dry hulb temper:oture In summer air ><;OO(Iillonins, the oondlti<1ned air ヲャ the spocc undi:i'i!o O:S.t P''-'"""" uf n. <c:nsiblc-cunl ins h, NZ ョセゥ ャセ M ィ 1!. cooling an<l tlcltumldilieulion d. hoating and llumjdifi.::..,tion Supp(l!Je, lhe m<:3n bqd)' セイャGャヲGBjャョ Nャ@ of-.. uncl<llh<<l ()mim L< 30"C. Lite mem tcmporuiuro of ifoiroullding Nオ G セ@ Is 2J"C nd tho,,it withi)t the roqm c 32"(", <;)() t>trcent l<h, lh<:o1 U1e penon wtll lo$e nmdmum body セィ@ by 3. ッョカ b. rndlation c_ mass ltjnsfej d. GOU.VCCUilU. rodintjoo nd OHIS!HI'JinSfor

9 (1 The difference between the c:omtort air-.:<mditioning ami industrial airconditioning I ゥッセ in the U. C<jUipiiicnl UliCd b ーイオ \ arll>p1ed c, indoor requil'ejtlt:lll< tl a 11hient COnditions The -'Uite of air JUpJilitd by cooling coil with n ィケM tllctor X' lies on tho psychrometrw chttrt at the a. inlcll!ocl.iojt Of RSl:W lift< \villi NイオエセZウZ t urve b inll:t$cciirm of GS HF line with slllllrujl 'JII cun..., c. pllinl which divldo:s RSfiF lin"' nt proportion lox {1 >.') cl point which divldos ESHJ; line in pmportion "' x (I-.X) カ エZエゥセ セッューッオ N ィケ イ ゥエセ セョァイ ョu@ chiアウャセョ l@ セGHャョ \ セ ャ \Zヲ[ ケMキューセュ \ Ute of the fon:e on submerged "urvc:(i w:fnce n. mass or hqmd n:rtio.ally above 11 b weigbloflhe liquid, ertically above tl c. rorc.l on vertical projcx:tion of the nd'ace cl produo!l oj' pressure al t.he cefltroid nnd the i!utfucc nre:t lf 1 bydroulie.. press bm rnm of 12.5 em din meter nnd plunger of 125 em dinmeler. what fo.-.:e '''ould be r«juired ''" the plung<:r to rnlsil mass of I tonne on Ulo rom? n 9RJ N h, n. 1 N <! N d N A liquid,md :1 ris.id bllll) lvpo M m(llilm 11 hen it is sul,jcetod I!J 11 0 ngulur velucify b. "llgltl:tr.;, lincllrl)' varying vel<lcity d. lincmiy ftcl!clct'lllion In two-dimensionul tlow. where u i' t.he <-;:ompolnetll illld I i, ttr.: <>f vdvtit)'. IJ1o o)r trc;!mline is given b) n, oodx -,.cjy - 0 b vd.x- udv = O c. uv tly ' 0 d. ud." t vdy () '" vn\i,l only for セ N@ ideal nuid llow 85.!!6. S ZッューョNセウゥ ゥ ュセエ イ@ ャ カゥN セ ュ N@ セP@ ')elf I b, incomrresoiblc lluid whether!he now steady (If not <:.. flo11. whctitt:r il is comvres ihle or nt l d. &teady now ttnd flnim from reservoir. wntcr is drained through two pipes of lo o.:n1 nod 21) em エ ーセ イケN@ U' Ute- fdctioml hood lo5(< tn hllth the pipes jj then the rmfo of discharge through lho lnr!lcr hl that llu ()ugh the moiler vipc wiu ll 2 h l2 Co d..j. 2 Whilo w>tat P"'""" through n pipe al a mean velocity v. U1e flow is t'ound to cbouge ll'oon to turbulent, LC auotlu:r fluid of spcd(io gtav[ty 0.8 lllld cooflictent of' VISC<lllily QI セ NL@ ot' or water. l possed through tl1e same ーゥーセ N@ l.he transition or tlow fi'om hunlnor to twbu.lcnl is o:xpcci<d if tho flo\\ velocity i> a. 2V b. v c. V2 d. V I A hydroulio jump.l< formed in., m wide rect:mgu lar ch nnel with sequent depth of 0.1 m alld ntc disoborgc ln lbc chtu1_ga. in m 1 1s, i!j a h. 3,4) c. 4.-B d Flow セ " V.ficly 10 lake "hen lhc ーイ gr.odicnt in the din:.:tion of1ll>\v is!\. zem b. ndwr'!c c..sligbtl)' f11ww'oblc d. llftjns)) t>vourublc If lho velocity diftribution m turbulent boun(!ary lllyer j, g\\1.'11 ケセ H N イ N jg@,,,.. F thcnlbe rujlo of ゥウーャセ ュ ョャ@ ャィャ ォョ セB@ to nomma.l boundory lnyer lhh:knes will be a b. M c d. ;). t Assertion ta): 11le couwr)t CJf equlli()riun is derived fr<iln of foroeo.

10 Reaion fr): 1l1e equtlibnnm requires llwt lltel"esuitant fotce acting over holh is セッイッ 4. Bulh A nnd Raoc true llnu R is the t!ou'o:et c:,:plaontion 01' A h, Bl>lh \ nnd R ure lrue R i NOT the: correct c'lpim(ooion ol' A c.. A i\ true bur R i< H J. A is fal.lie but R is true 89. Assertion ( t\)! The セィ [ 111 t>ending m lmonl bttwecn two BGoッウMjセ ol' " bt:u111 "'Jlllll Ill the reo uf the セィ ti,rcc diogr m hctwc 1) the: hm section. ュᆱセ r@(r): l11e chnnge in fhe she:oring Io ree: bttwc:c:n \Wil エZイHIDs ᄋ^ czcz Q o r beam due \o distributed looding i.o <:<juai!o tl1c orca ol' tho load inlcn.sity dlngnuu between lhe. lwe> ウ エゥ ^ョセ N@ n, Both A and Rare- true au(l R is the con'<lct elq>ibll'ilion of.\ b. Both _\ and 1<. ore true but R i.. NO r the co!wd explanation ot' A c. A i:. true bul R i;; false d. A is ヲ but R is truo Q(l. Aa crtion ()\): A column e>f square cross-section has greater bnckhng stability than of column (1 cireul crosssootion of aame length ウ nmtuia.l s.:.me end conditions and s:.me ;treil of llto«-seetlon, Rt:ru.uu (R): '11oc e.><>lld moment of>jc:a of " Column of circular crosji... luilclion Is. セュ [ ッャ ohan o!' column qf. q!hn: \ イ セM ウ lnoving PQ セ ュ B@ セイ ョ N@ iャセ^@ Nセ セッュZM エᄋ NLx ーャ セui@ セTZ 4, BoUt 1\ :o.nd Rilrc: true and R is e.o)m;cl ol' A 1!. Allth 11nd R true htn R is NO,. I he uf A 1:. {\ is IIUO 'R is fnlsc J I ol. '' is fo L.e but R i lrue A'li'eniun (Ali For liore:&ci cult hog the speed on d lathe is vc;o'y 101\, Z r (R): The require<! Jeed r:ue is Ill\\ 1n ャィョ Z セ セエイョエゥ ^ ョ N@ a. BO!h A and Rare lrlli: n<i R con ucl セQ^ of A I,, B.olh,\ uqol R. ore 11'1 < btol R i>c NO I the correct e,xplanati.on of A.:. A i> true but R Is false cl A 1S fol..c but R is lruo 92. Assenion (1\.l intemal sea"' are cnl D"n gear shnper. Rc son (R): Uobbmg ;, nul wihtblc Jot culling outctnlll gear. lll olll " Bodt A and Rare true,,nd R is tho eomx:t cxplnnntlon of A b. Uoth A unci R :u'e 1\ul R NOT lhc \!mtod cn セャ G ャ ョ Z nf A c..<\ i$true hur R f l d. A but R is 93. a ウセ (A): fixed posiuon layout ls in mnnu!i>cturins ャキウ ャイ イ 6hips vess.,l etc. ョッウッZ セr@(R): Capolul in\><:sis mml i-. mi'ni mum ;, roxcd pooil1onlo uul BC)ili A lind R:on: u ue tond R '' fhc CQmX:I エ ZjApi セョ H of A h. BoU1 A R atll bu! R NO'r tho corr..:t GBM セーャゥャョ of A c. A is lrne bul R os-false d, J.\ is f.1lse bnl R is lroe 94. Assertioo (AJ; l'he Jio st-law elliciencv <>Valuates the energy セオ wb.cre:u!.he second-law oj'ficocncy evalualtll! the energy qua lity uulizallon. Reason (R): Tho second-law ヲゥ ッ l"or a proc.,;s is dofinc:d as 01e ratio of change. of available energy of the to lhe change of available enefl!v of the セ IAs エ ュ N@ BnU1 A and.r:ue and R IS Ou: COI'n:<:l expl>n:otioll or A b. Both A nd R are true hut R i< NO'I the correct explanation of A c. A is true but R is false d. A is false but R is true 95, Asoenion 1 A); Super<:onmoted llow,.,;u nqt occur in :JIII)'J)<'S or nnt;des. Rt:"-'liill (R)! it by tlte formhliou llf セ QIZ エョ L キセカ N@ セ N@ Both A an<l Rare truc; ami R i9 thc tbrn!ci \jn セ i 11l' A b. Doth A ml R nil:! lmo but R NOT coorrcct ッ Z クイャ セョ ol' A c...-\ \rue but R f.1l<c d..'\ is f'jisc: but R is true 96. 1\slertion (A): R-22 is Wled Jl.!l a rcll:ig.,'lllll fn u II relfigeratoil'5. Rr=<m (R); R-22 non-lo:<ic and nom lnllomm"l!lc. Bnlh il. ;nod Rorc tru<: ottd R is lhe eorre.:1 exp lonnlinn C>f' 1\ b. SoU A 11nd R nre!rue but R is N'O'I' U1e iao ゥャG HN Q セ cx}ai ョ エャッョ@ of A c..\ os!ru bul R is false d. A,. fllt.c but R i true 91. Consider tloe lilllowing Stateltlents: For pattide in m equilibrium

11 @ セャ GB カキ I Sum of tbe forces along X -direction is イセコッN@ 2 Sum of the force along Y-direarirm is 1..ero. J. Sum or the mom en IS of all forces abour a point iszertl, Of these stale)llents a. I and J are correct b 2 Bllil 3 are correct c I Blld 2 are correct d. I, 2 and 3 arc correct l'hecquation of motion o(boib is given uy s = 2r + Jt (where s is in meters nod 1 is in seconds) SIRI1ing livm!'est it will travel in 2 seconds. a distance of a. 35m b 28m o. 27m d 20 ill f he in the ( I) Qi'.the truss shown in the figure is - lol.h 4 "' i ln j<t-<toam- l.2ra Mセ G@ a, 12 kn compressive b. 28 kn leltsile c 8 kn d. l l kn compn:ssive Consider the follow! n,& statemenis, A particle from rest is acceleruting along a straigh1 line whh an acceleration kt where k 1S a cqnsmm and t is!he time elapsed al'ier time' t' I i Is velocity is given by kt' 2. its velocity is gi\'en b t/2 kr 3. ibe distance covered is l(tvcn 112 k1 1 - セゥカ Q Q@ ョァャ セ@ 4 the dislance covered is b)' 116 kt'. - Or these Slate me!lis a, I and 3 are correc1 b 2 and are correct c. I 1111d I are correct d. 2 and 3 are correct lf rwo fo)ws p and Q uel nl aqgle e!he rcsulllull of theso 1wo forces would make an It tana with P $uch that UsinO l' - t]sm los 106.!'smO b. l3n セ M ᄋ NLN[M]M ᆳ P+(.Isin8 c. l<ll1<1' _ {!s1n 9 I' (!coso J I ul I J d. tan a - Psmlil I' -l'cos8 t\ mechanical s stem can be said to be conservacive if the a. potemiaj energy of t.he system remains cons! ant b. ki netic energy of tbe. S)'Stem イ ュ ゥョセ@ COO Sian! c. of ahe kinetic potencial energies remai ns constunt d. linear momentum remains cojjsiant lf a body is moving \Villi a uniform acceleration "a". then!he disiance traveled by the both in the "n" rhe secohd is given by (where u is djeiuitial veiqdty) a. -2- u "'"'"o( l - 211) p セ HQ@ l ) 2,,, c. u- 2n - IJ 21 d, 1-%(n- I) The power req1rlred by a machlm having an ct'iweney of 80% for lilising a load of 24 N lluough dis'iance of J(i m in I minute is a. 12w b. I SW c. sow d \V Which one of the ctnves shown below represents rhe characteristic of a hydrodynamically lubricated joua:oal G セャイゥjoァ _@ t ""HI,14 11 Ill L L セ L a. 1 b! (1. 3 d イセᄋ L@.: The safe rim velocity of a flywheel is in!juenced b the a, centrifugal ウエイ ウ b. 111!Ctuat.ioo of ene'!ly c. nucluarion of speed

12 J ュ or tm 11)1 whc<!l 107, Matcn I (Beann!!.S) with l.tst II (Appltcaoons) and select the correct OJlSW(f: I imi A J<wmal be:trin!l B Thrust ゥョイゥョセZ@ <..:. Conical p1vt)l bearin!,l D. J3all beanng I fst II I F.lectric motors 4 Watches 3. ' Marine engines 4. Sw vehog cbajrs tmlos, II ll (' 0 4 Q, ' 4 I 1 b 4 2 I 3 c d IuS Tht' S'l 1111 ligure a slider crunk mechanism in which lmk I is The number of ins1antane()u.< ョエ セ@ 1\0Uid be "' b 5 c. (i cッョウエ ウエオエ Zエョセッセ N@ ッセエョエ セャゥ イ@ NAョィセ ュ@ セオョ エ ョ セオャ ゥ ョッゥエ イ ャ ョイ ャオZセョ@ d \Q.!be followmg The 1\le'" for crunk with cr:ml: ro1111ing nt vc locit pro Valu<$ (tr L l'iston vdocjiy. 2 Piston accclomuotl. J Nttrnllll nccclemlion o( crank p 111, I. A of the conn<:<:t ina rod Of tbese statements a. I and are correct h, I. 1, 3 11nd 4 nro correct c. I. 1. nnd 4 are correct 110. d 3 a.nd 4 are c11rrect 1 r two parallel shatls are to be connected aod ihc distance between tile fi.\cs or sballs is small aud vunuhlc. tlt n one would lll'ed hl w;e 11. エセ オエ b a universal,joint c. un Oldham's couplmg 11utl1 Nョオ セエオエ ュ GAZNセセィャ GャQ@ d u joint I 11 Consider the fo llowong n:jatrns to ihe curv(,' for the inertia vis cran)( 3lli!le for a honzomtll, smgle t) m the given figure... t I 12 I 13 oi = 160",., 1,::; ot-0, セ N@ -\ =A.. Ot' these statements a. I BJJd 3 are C(1trect h 2 und J ate correct c. I, 2 un,l-1 nrc cotrecl d I, 3 and 4 An' correct fbe hetghl b of Poner goyemor witb equal セNョイオZ@ ーャ at<t1wtl disutnce from is of l'lltl\11011 ts l!llpressed as rn mass of balls of the governor M - m;tss 11f セ ャウ@ oft he I!OWrnor nnd n セイーュI@ a. J. s9 1.2[ -M] 111 If.. IIJ 1\fb /r,.lll,l[ "'i:+miij N' t' /t.. 9),{:,:,] ;. d. L]YQNR { セ } セャセ エャオ エキョ _m N Mutch LtSt I (1 )'f>e uf Grwcrnor) wtth Ltst II (Cburnct&isllcs) and tho correct answer: Ltst I A lsochmnous govc.mor B Sen sit;, c g,warnor C Huntiru; gll\crnllr 0 Stable j;dvemor Lrst II I. Corumuously abo\e 1111d below mcm speed ィョァセ@ { 2 Tor CltciJ JAhen then: I> unl)' one rod ius tlf rotntion 3. l{igher di;;placemenl of sleeve for fnttuonnl of don,;tmt for nil mdii Q f rotation Codes: 1\ B C D

13 @ Il-l _ 117 a, b. c d. 4 l 2 4 :;, >I 3 2 l J I Consioertlte following statements..an in-line four-cylinder foilt stroke engine is complete balanced for, I Ptimary force, 1 Secondary force. 3 Primary c.ouples. couples. Of these staicmcms n, I, J and 4 are comlct b I. 2 and arc correct c. l and 3 are c.orrect d. 2 and 4 are e.orrett A unifonn cantilever beam undergoes transverse vihrations, The number of natw'al frequcocies associated with tho hfiiu11 IS a. t b 10 c. 100 d infinite Two vibratory s stems are shown iu!be given.figures. The ratio of セ nnrural frequency or longitudinal vibration of lite!! second s stem to that.. of the li rst is 1 J I 2 a, 4 b d \ shaft on two benting at ends carries two Oywbeels 'L" apan. Mass moment ofinenia of the t"o Oywh el ale 1, and It,. I being t ho rolar moment of inertia of cross-sectional area of tbe shaft Oislallce In of lbe Nエョッ of LOrsioual vibration of tile セィ ヲャ@ frqtn Ute-Oywheel ll1 is ALセy ョ@ a. エセ NM I _.J:!.L 1. +1, b. I = y_.. 1,. -+1, u. c. I JJ.,.- 1 IJ of ll イ Nセ@ d I,- '-' l,i A a gear of infini di ild1 ell: r b. infinite module c. zero pressure<uig.le d. large. pitch The maxrmij111 efl'iciency for spiral gears in mesh is given by (where 0 - shafl 1\ngJe aud 4> = friction 3)1gle) a. I t cos( II ;) I tcos(ll+fl) b l+cos(ll-jo) I I <bs(11 9i) 1- cos(ll- p) c. l+cos(ll+tl) d I C0$(8 r ) I +cos( 8 - セI@ The block diagram of an auromalic control ュ エセカウ@ is shown in the following figure ;1, _, Its sin!plified r.;;:;;;' will be a_s io a. b. c. R r-c - C